Rear Main Seal Housing SBC w/1-Piece Rear Main

The Rear Main Seal Housing SBC w/1-Piece Rear Main (MPN 14088556) is an essential component for small-block Chevrolet engine builders and restoration professionals who demand OEM-quality reliability. This precision-engineered housing seals the critical junction where the crankshaft exits the engine block, preventing catastrophic oil leaks that compromise engine longevity and performance. Whether you're rebuilding a vintage 327, 350, or 383, this Chevrolet Performance part is the factory-spec solution trusted by mechanics, hot rodders, and engine shops who refuse to compromise on seal integrity.

Engineered specifically for small-block applications, this rear main seal housing accommodates the modern 1-piece rear main seal design, which eliminates the leakage issues common to older 2-piece seal configurations. The housing provides precise bore geometry and surface finish to ensure the elastomer seal maintains consistent contact pressure across the crankshaft rotating surface throughout engine operation. Chevrolet Performance castings meet strict dimensional tolerances and material specifications, delivering the same durability and fit you'd find in factory assembly lines. The compact footprint (6.6 x 3.1 x 6.85 inches) and lightweight design (0.98 lbs) facilitate straightforward installation without modification to existing engine blocks.

This housing is ideal for complete engine rebuilds, vintage restorations, and performance engine assembly where authenticity and reliability are non-negotiable. Installation requires standard engine disassembly procedures and pairs seamlessly with Chevrolet Performance crankshafts, blocks, and seal kits for comprehensive drivetrain solutions. Mechanics and engine builders specify this part when replacing worn or failed rear main seals to restore original specifications and eliminate chronic oil weeping at the pan gasket and transmission mating surface. Stock this essential component for any SBC project involving complete engine teardown or crankshaft replacement.